Safety device for gas ranges



Sept. 22, 1931. B. VICTOR ET AL 1,824,312

I SAFETY DEVICE FOR GAS RANGES Filed Jan. 27, 1930 2 Sheets-Sheet 1Inventor; B V cr01? EGHQRDEAE/PRMJM itomey Sept. 22, 1931. B. v.1cToR ETAL 1,824,312

. SAFETY DEVICE FOR GAS RANGES Filed Jan. 27, 1930 2 Sheets-Sheet 2 Aitorney Patented Sept. 22, 1931 UNITED js rArEs PA E T, we P BENJAMINVICTOR AND RICHARD E. ABRA'MSON, or enoivxynnw YORK steamy nnvionronGesneiveris Application med January 27, 1930, 'seriainb; "423, 69.

This invention relates to safety devices for gas ranges and moreparticularly to devices of this character for automatically cutting oifthe fuel supply when'the flame at the burner isextinguishedaccidentally.

An important object of the invention is to provide, in a manner ashereinafter set forth, a safety'device for gas rangesof theaforementioned character which will function L automatically when theliquid contents of a container which is being heated on the range boilsover with .the liabilityof extinguishing the burner flame.

Another important object of the invention is to provide a safetytdevicefor gas ranges which embodies a. spring controlled valve disposed inthefuel supply pipe which is op,- eratively associated with a gravityactuated release mechanism whereby said valve will be automaticallymoved to :closed position when the release mechanism functions.

A further important object of the invention is to provide'a safetydevice for gas ranges of the aforementioned l'character "T125 whichembodies manually operafble means for re-setting the valve in openposition in an expeditious manner when it is so desired.

Still further objects of the invention are to provide a safety cdevicefor gas ranges 30 which will be simple in construction, strong,

durable, eflicient in its use, which'will not detract in any way fromthe appearanceof'the gas range and which may be'manufactured atlowcost.L All of the foregoing and still'further objects and advantagesof't-heinvention'will become apparent from'a study of the follow ingspecification, taken in connection with the accompanying drawings{wherein like characters of reference designate corresponding ing partsthroughout the severalviews, and wherein:, I

Figure 1 is a view infront'el'evatiori of a gas range showing a safetydevice, therefor constructed in accordance I with this inventioninstalled thereon. 1 Figure 2 is a vertical cross section through theautomatic spring controlled cut-ofi'valve.

Figure 3 is a view in elevation of the automaticcut off valve taken atright angles to,- F1gure2.j Flgure a is a horizontal cross section takensubstantially onthe line 4'4 of Figure looking in the direction ofthearrows. I

Referring to the drawings; in detail, the reference characterl'd'esign'ates generally a conventionalgasrange provided, as usual, withthe burners 2 having communication with the common gas supply pipe 3through the medium of the manually'operable valve 4;. The pipe 3 extendsthrough one side of the range 1' and has communications with a suitablesource of supply.

Interposed in-the supply pipe 3 adjacent the outer side of the wall!) ofthe range is a valve designated generally by the reference numeral 6 andcomprising a casing 7 having a tapered bore 8 extending downwardlythereinto and communicating with a-passage 90f uniform diameterthroughout which extends to the lower end ofthe casing 7 Ondiametrically opposites'ides, the casing 7 is provided withmearis10+10to couplethe threaded adjacent end-of the supply'pipe 3 to the valve. Atapered valve body in the form of a plug 11 is mounted for reciprocationin the bore 8 and is provided with a stem 12 which extends through theopening 9 and has mounted on itslower end a right angularly disposedlatch plate 13 which, as seen to advantage in Figure 3 of the drawings,is provided adjacent one'end witha transverse depression or groove 14.011 its upper end, the valve 11 isprovided withan integral lug 15 and acompressible coil spring 16 encircles said lug and has its lower endimpinged'againstthe valve 11 and its upper end impinged against aclosure cap'io'rzplug 17 threaded into the upper end of the; valvecasing 7. 3 'f Hangers18 18 are rigidly secured to diametricallyoppositesides of the valve casing 7 at the lower'end portion thereofthrough the medium of the screws 19 and said hangers extend downwardlyon opposite sidesofthe latch plate 13 and are provided withinwardlyoffset portions 20-20 providing shoulders beneath said latch plate 13.Pivotally mounted between the inwardly offset portions 20 of the hangers18-18 is a cam lever 21 adapted for engagement with the latch plate 13for manually shifting the valve body 11 upwardly directed arm 22 whichextends.

through the wall 5 of the gas range 1. Pivotally mounted between thefree ends of the arm- 22 is a substantially horizontally disposed lever23. One end of the lever 23 is disposed adjacent the valve 6, said-levere-X- tending through a suitable opening (not shown) in the wall 5 of therange. The end of the lever adjacent the valve 6 has mounted thereon aroller 24 for engagement with an arcuate spring; controlled latch orkeeper 25 which is pivotally mounted, as at 26, on the valve casing 7and terminates in an acutely angled end portion 27 upon which is mounteda roller 28. adapted to seat in the recess or groove ll of the latchplate 13-, as illustrated to advantage in Figure 1 of the drawings. Atits upper end, the latch 25-is provided with an integral stop lug 29 forengagement with the roller 24 for limiting the swinging movement of thelever 23. A coil spring 30 is disposed between the upper portion of thelatch 25 and the valve casing 7 for normally urging said latch. towardits operative position. A receptacle 31. is suspended from the oppositeend I portion of the lever 23 adapted to receive liquid from an inclinedpan 32 removably supported in the range 1 beneath the burners 2'thereof. At its lower end, the pan 32 is provided with a discharge spout33 disposed above the receptacle 31 in order that the liquid will bedirected into said receptacle, as will be apparent. Equalizing springs34 have one end secured to the arm 22 and their opposite ends securedtothe lever 23 in spaced relation on opposite sides of the pivotalsupporting connection for said lever and the purpose of these springs isto assist in maintaining the lever 23in substantially horizontalinoperative position. c

In operation, assuming the device to be in inoperative position asillustrated in Figure 1 of the drawings, should any liquid which isbeing. heated on the range boil over, the samewill be precipitatedinto-the pan32 and gravit-ateto the lower end thereof whereit will bedischarged through the spout 33-"into the receptacle 31. When thusweighted, the receptacle 31 will swing that end of the lever 23downwardly and the opposite end thereof upwardly with the result thatthe arcuate latch 25 will 'be'shi-fted against the tension of the coilspring 30 in a manner to be disengaged from the l'atohplate: 13 and thevalve 11 will be'moved downwardly to closed position,- as

seen in Figure'2, by the coil spring 16. It should be here mentionedthat the valve body 11 is provided with a transverse port 35 adapted toregister with the bores of the connections 1010 of the valve casing.lVith the valve 11 in the position seen in Figure 2, the fuel supplywill be out off and the burner 2 extinguished. When it is desired tore-open the valve 6, the receptacle 31 is emptied and replaced on thearm 23. The cam lever 21 is swung in a manner to engage the latch plate13 and force the valve body 11 upwardly to raised position against thetension of the coil spring 16 and the latch 25 is permitted to return tooperative position by lifting upwardly'on the end of'the lever 23whichsupports the receptacle 31. 7

While the invention has been shown and described in association with. adomestic gas range, it is to beunderstood: that the same may be used inconnection with any heating device or stove for which the sameis foundadapted. I It is believed that themany advantages of a safety deviceconstructed in accordance with this invention will be readily understood, and although the preferedembodiment of the invention is asillustrated and de tion: in the valve casingand controlling the passagetherethrough, resilientv means engaged with the valve body'yieldinglyurging the same toward closed position,.a valve stem depending from thevalve body and extending through the casing, a latch plate rigidlymounted on the free end of the valve stem, said latch plate providedwith a. transverse groove adjacent one end, an arcuate keeper pivotallymounted intermediate its end on the valve casing and having. a rightangus larly disposed extension on one end, a roller mounted on theextension engageablein the groove ofthe latch plate for retaining thevalve in open position, and means for rocking the keeper in a manner todisengage the same from the latch plate comprising a pivotally mountedlever having one end disposedadjacent said keeper, a roller mounted clein a manner to rock the lever and shift the keeper out of engagementwith the latch plate. 1'

2. A safety device for ranges of thec'haracterdescribed comprising avalve casinginterposed inthe' fuel'sup'ply pipe of the-range,

a valve body mounted for reciprocation in the valve casing, resilientmeans for yieldingly urging the valve body toward its closed position, avalvestem extending from the valve body through the casing, a latchplate mounted on the free end of the valve stem and having a transversegroove adjacent one end, a spring controlled arcuate latch pivotallymounted intermediate its end on the valve casing and having a rollerjour-- tween the free end portions of the arm, a

roller journaled on one end of the lever engageable with the latch insamanner to rock the same on its pivot out of'enga-gement with the latchplate, and meansassociated with the opposite end of the lever forshifting the same.

3. In combination with a gas control cock having a sliding valve membermovable to open and closed position, spring means acting upon said valvemember to hold the same neath the outlet of an overflow catch pan, andresilient means for holding said lever in a set position and forpermitting the com bined-weight of said container and overflow toactuate said lever to release said latch member whereby said springmeans will move said valve member to a closed position,

and an actuatin lever manually operable independently o said'fulc'rumedlever, and

engageable with said valve member to manually move the same toa-n 0 enposition to allow said valve member to be engaged by said arcuatedshaped latch member.

In testimony whereof we afiix our signatures.

BENJAMIN VICTOR.

RICHARD EDWARD ABRAMSON.

in closed position, and gravity actuating means for actuating said valvemember to an open position against the action of said spring means, saidgravity actuating means including a pivoted arcuate shaped latch memberengageable with said valve member, a fulcrumed lever provided with aroller at one end for engagement with the curved side of said arcuateshaped latch member, a s

container supported upon the opposite end of said lever, and adapted tobe disposed beneath the outlet of an overflow catch pan, and resilientmeans for holding said lever in a set position and for permitting thecombined weight of said container and overflow to actuate said lever torelease said latch member whereby said spring means will move said valvemember'to a closed position.

4. In combination with a gas control cock having a sliding valve membermovable to open and closed position, spring means acting upon said valvemember to hold the same in closed position, and gravity actuating meansfor actuating said valve member to an open position against the actionof said spring means, said gravity actuating means including a pivotedarcuate shaped latch member engageable with said valve member,

a fulcrumed leverprovided with a roller at one end for engagement withthe curved side of said arcuate shaped latchsmember, a containersupported upon the opposite end of said lever, and adapted to bedisposed be-

